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SETTING OF ALARM RESUME TIME
The alarm buzzer is silenced by pressing alarm buzzer stop key (BUZZER) on the control panel during
alarm.
The buzzer will be activated again after certain suspension if the alarm condition is continued. The
suspension time can be set by following the procedure shown in the table 3 below.
The example in the table is based on the assumption that the desired duration is 20 minutes.
Note: The duration is set in 30 minutes (Initial setting 130) at the factory.
Table 3. Setting procedure (change from 30 minutes to 20 minutes)
Description of operation Key operated Indication after operation
1 -----
The current chamber temperature is
displayed.
2
Press the numerical value shift key
for about 5 seconds.
The first digit blinks.
The settable digit is shifted.
3
Set to F25 with the digit shift key
and numerical value shift key.
When pressed, the figure of settable
digit changes.
4 Press enter key. ENT
The current setting is displayed
and the first digit blinks.
The settable digit is shifted.
5
Set to 130 with the digit shift key
and numerical value shift key.
When pressed, the figure of settable
digit changes.
6 Press enter key. ENT
Alarm resume time is memorized
and the current chamber
temperature is displayed.
• The settable alarm resume time is between 10 and 60 minutes with 1 minute increment. (The setting is
110, 111, ------- 159, 160). The buzzer would not reset if the resume time is set in 100.
• The buzzer is ON when the resume time is changed in F25 while the resume time is counted (the
buzzer is silenced by alarm buzzer stop key (BUZZER)). The count of resume time is stopped.
• The setting cannot be changed during power failure.
• The set mode returns to the temperature display mode automatically when 90 seconds has passed
without any key operation. In this case, any setting before pressing enter key (ENT) is not memorized.
• It is selectable whether the buzzer is in conjunction with the remote alarm or not when the buzzer is
silenced by alarm buzzer stop key (BUZZER). (The remote alarm is not in conjunction with the buzzer
by factory setting.)
• The remote alarm is activated in conjunction with the buzzer if the third digit “1” is set to “0” in the step 5
above.
ALARMS & SAFETY FUNCTIONS
This unit has the alarm and safety functions shown in table below, and also self diagnostic function.
Table 4. Alarm and safety function
Alarm & safety Situation Indication Buzzer Safety operation
High temperature
alarm
When the chamber temp. is
approx. 10
o
C (or 15
o
C) higher
than the set temp.
Alarm lamp blinks.
Intermittent
tone with
12
min.
delay.
Remote alarm
with 12 min.
delay.
Power failure
alarm
At power failure When
power cord is disconnected.
Alarm lamp blinks.
Intermittent
Tone.
Remote alarm.